# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# pyre-unsafe

from __future__ import absolute_import, division, print_function, unicode_literals

from thrift.protocol import TProtocolDecorator
from thrift.Thrift import TMessageType

SEPARATOR = ":"


class TMultiplexedProtocol(TProtocolDecorator.TProtocolDecorator):
    def __init__(self, protocol, serviceName):
        TProtocolDecorator.TProtocolDecorator.__init__(self, protocol)
        self.serviceName = serviceName

    def writeMessageBegin(self, name, type, seqid):
        if type == TMessageType.CALL or type == TMessageType.ONEWAY:
            self.protocol.writeMessageBegin(
                self.serviceName + SEPARATOR + name, type, seqid
            )
        else:
            self.protocol.writeMessageBegin(name, type, seqid)
